Dispenser gun



FIG. 1 is a perspective view of dispenser gun showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a front elevational view;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a dispenser gun, as shown and described. 